Daniel Moye's Technical Writings

Rock mechanics in the investigation and construction of Tumut 1 Underground Power Station, Snowy Mountains, Australia

Plate 6. – Supports Used During Construction (a) Machine-ha1l roof excavation, in the
foreground supported by rock bolts only, in the background by rock bolts supplemented with
steel supports. Triangular overbreak on right side of roof is site of rock fall caused
by intersection of minor fault A and joint of set b. (b) Transformer hall, 72 feet wide,
with rock bolts only as support.

Plate 7. – Excavation of the Machine Hall (a) First stage of excavation at the end of the machine
hall in granite. (b) Machine hall during construction, showing concrete ribs for permanent support.